Question

Define the term weight. The mass of a body is 20 kg. Taking the pull of gravity on mass 1kg equal to

10 N, express the weight of the body in

i. kgf

ii. newton​

Answer 1

Explanation:

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Question

The mass of a body is 20kg. Taking the pull ofgravity on mass 1kg equal to 10N, express theweight of the body in i)kgf ii)newton

Answer · 3 votes

Answer:F=10N,m=20kg,t=10sa= mF = 2010 =0.5m/s 2 v=u+at=0+0.5×10=5m/sChange in momentum =m(v−u)=20(5−0)=100kgm/s

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Answer 2

If the mass of a body is 5 kg, what is its weight?

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Correct option is

A

49N

The most common definition of weight is the force exerted on a body by gravity. This is often expressed in the formula W = mg, where W is the weight, m the mass of the object, and g gravitational acceleration, g=9.81 on surface of earth.

so if m=5kg then W=m.g=5×9.81=49.05N

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